<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref } from 'vue'
import { ElMessage } from 'element-plus'

//控制注册与登录表单显示， 默认显示注册
const isRegister = ref(false)
//定义数据模型
const registerData = ref({
  username: '',
  password: '',
  rePassword: ''
})

//定义密码校验函数
const checkRePassword = (rule, value, callback) => {
  if (value === '') {
    callback(new Error('请再次确认密码'))
  } else if (value !== registerData.value.password) {
    callback(new Error('请确保两次输入的密码一样'))
  } else {
    callback()
  }
}

//定义表单校验规则
const rules = {
  username: [
    { required: true, message: '请输入用户名或邮箱', trigger: 'blur' },
    { min: 2, max: 30, message: '长度为2~30位非空字符', trigger: 'blur' }
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur' },
    { min: 5, max: 16, message: '长度为5~16位非空字符', trigger: 'blur' }
  ],
  rePassword: [{ validator: checkRePassword, trigger: 'blur' }]
}

//调用后台接口,完成注册
import {
  userRegisterService,
  userLoginService,
  permissionSearch,
  getUsernameByInput
} from '@/api/user.js'
const register = throttle(async () => {
  // 检查密码和确认密码是否一致
  if (registerData.value.password !== registerData.value.rePassword) {
    ElMessage.error('两次输入的密码不一致，请重新输入')
    return // 阻止继续执行注册接口
  }
  // 如果一致，调用注册接口
  let result = await userRegisterService(registerData.value)
  ElMessage.success(result.msg ? result.message : '注册成功')
  await router.push('/login')
}, 5000)

//绑定数据,复用注册表单的数据模型
//表单数据校验
//登录函数
import { useTokenStore } from '@/stores/token.js'
import { useRouter } from 'vue-router'
import { setRoutes } from '@/router/index.js'
import { permissionStoreService } from '@/stores/permission.js'
import throttle from 'lodash/throttle.js'
const permissionStore = permissionStoreService()
const router = useRouter()
const tokenStore = useTokenStore()
const login = throttle(async () => {
  let result = await userLoginService(registerData.value)
  console.log(result)
  if (result.code === 0) {
    ElMessage.success(result.msg ? result.msg : '登录成功')
  } else {
    ElMessage.error(result.msg ? result.msg : '登录失败')
  }
  const getUsername = await getUsernameByInput(registerData.value.username)
  sessionStorage.setItem('user', getUsername.data)
  //把得到的token存储到pinia中
  tokenStore.setToken(result.data)
  sessionStorage.setItem('token', result.data)
  let permissionsResult = await permissionSearch(registerData.value.username)
  const permission = permissionsResult.data
  permissionStore.setPermission(permission)
  setRoutes()
  //跳转到首页
  await router.push('/index')
}, 5000)

//定义函数,清空数据模型的数据
const clearRegisterData = () => {
  registerData.value = {
    username: '',
    password: '',
    rePassword: ''
  }
}
</script>

<template>
  <el-row class="login-page">
    <el-col :span="12" class="bg"></el-col>
    <el-col :span="6" :offset="3" class="form">
      <!-- 注册表单 -->
      <el-form
        ref="form"
        size="large"
        autocomplete="off"
        v-if="isRegister"
        :model="registerData"
        :rules="rules"
      >
        <el-form-item>
          <h1>注册</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input
            :prefix-icon="User"
            placeholder="请输入用户名"
            v-model="registerData.username"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
            v-model="registerData.password"
          ></el-input>
        </el-form-item>
        <el-form-item prop="rePassword">
          <el-input
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入再次密码"
            v-model="registerData.rePassword"
          ></el-input>
        </el-form-item>
        <!-- 注册按钮 -->
        <el-form-item>
          <el-button
            class="button"
            type="primary"
            auto-insert-space
            @click="register"
          >
            注册
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link
            type="info"
            :underline="false"
            @click="
              () => {
                isRegister = false
                clearRegisterData()
              }
            "
          >
            ← 返回
          </el-link>
        </el-form-item>
      </el-form>
      <!-- 登录表单 -->
      <el-form
        ref="form"
        size="large"
        autocomplete="off"
        v-else
        :model="registerData"
        :rules="rules"
      >
        <el-form-item>
          <h1>登录</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input
            :prefix-icon="User"
            placeholder="请输入用户名或邮箱"
            v-model="registerData.username"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            name="password"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
            v-model="registerData.password"
            show-password
          ></el-input>
        </el-form-item>
        <el-form-item class="flex">
          <div class="flex">
            <el-link
              type="primary"
              :underline="false"
              style="text_decoration: none"
            >
              <router-link
                to="/getBackPassword"
                style="text-decoration: none; color: #42b983"
                >忘记密码</router-link
              >
            </el-link>
          </div>
        </el-form-item>
        <!-- 登录按钮 -->
        <el-form-item>
          <el-button
            class="button"
            type="primary"
            auto-insert-space
            @click="login"
            >登录</el-button
          >
        </el-form-item>
        <el-form-item class="flex">
          <el-link
            type="info"
            :underline="false"
            @click="
              () => {
                isRegister = true
                clearRegisterData()
              }
            "
          >
            注册 →
          </el-link>
        </el-form-item>
      </el-form>
      <router-link to="/index" class="custom-button">返回首页</router-link>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
  height: 100vh;
  background-color: #fff;

  .bg {
    background:
      url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
      url('@/assets/login_bg.jpg') no-repeat center / cover;
    border-radius: 0 20px 20px 0;
  }

  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;

    .title {
      margin: 0 auto;
    }

    .button {
      width: 100%;
    }

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
.custom-button {
  padding: 10px 20px;
  font-size: 16px;
  color: white;
  background-color: #42b983;
  border: none;
  border-radius: 4px;
  text-decoration: none;
  cursor: pointer;
  position: fixed;
  bottom: 20px; /* 距离底部 20px */
  right: 20px; /* 距离右边 20px */
  z-index: 1000; /* 确保按钮在其他内容之上 */
}
</style>
